diff --git a/lxc/execute b/lxc/execute
index 83f9378..0b9936a 100755
--- a/lxc/execute
+++ b/lxc/execute
@@ -86,6 +86,9 @@ lxc-attach -n piston -- \
 
 # process janitor
 lxc-attach -n piston -- \
-    /bin/bash -c "for i in {1..2000}; do pkill -u runner$newinc --signal SIGKILL; done" > /dev/null 2>&1 &
+    /bin/bash -c "\
+        for i in {1..100}; do pkill -u runner$newinc --signal SIGKILL; done ;\
+        find /tmp/* -user runner$newinc -exec /bin/rm -rf {} \;\
+        "
 
 rm -rf $basepath/tmp/$epoch